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<?php |
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/* |
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GESTCONV - Aplicación web para la gestión de la convivencia en centros educativos |
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Copyright (C) 2015-2017: Luis Ramón López López |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU Affero General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU Affero General Public License for more details. |
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You should have received a copy of the GNU Affero General Public License |
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along with this program. If not, see [http://www.gnu.org/licenses/]. |
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*/ |
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namespace AppBundle\Service; |
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class SenecaAuthenticatorService |
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{ |
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/** @var string */ |
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private $url; |
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/** @var boolean */ |
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private $forceSecurity; |
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/** @var boolean */ |
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private $enabled; |
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public function __construct($url, $forceSecurity, $enabled) |
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{ |
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$this->url = $url; |
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$this->forceSecurity = $forceSecurity; |
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$this->enabled = $enabled; |
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} |
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/** |
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* @param string $user |
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* @param string $password |
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* @return bool |
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*/ |
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public function checkUserCredentials($user, $password) |
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{ |
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// devolver error si no está habilitado |
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if (false === $this->enabled) { |
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return null; |
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} |
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// obtener URL de entrada |
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$str = $this->getUrl($this->url, $this->forceSecurity); |
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if (!$str) { |
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return null; |
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} |
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$dom = new \DOMDocument(); |
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libxml_use_internal_errors(true); |
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$dom->loadHTML($str); |
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$xpath = new \DOMXPath($dom); |
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$form = $xpath->query('//form')->item(0); |
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$hidden = $xpath->query('//input[@name="N_V_"]')->item(0); |
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if (!$form || !$hidden) { |
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return null; |
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} |
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// enviar datos del formulario |
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$postUrl = $form->getAttribute('action'); |
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$hiddenValue = $hidden->getAttribute('value'); |
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$fields = array( |
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'USUARIO' => urlencode($user), |
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'CLAVE' => urlencode($password), |
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'N_V_' => urlencode($hiddenValue) |
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); |
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$str = $this->postToUrl($fields, $postUrl, $this->url, $this->forceSecurity); |
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if (!$str) { |
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return null; |
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} |
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$dom = new \DOMDocument(); |
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libxml_use_internal_errors(true); |
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$dom->loadHTML($str); |
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$xpath = new \DOMXPath($dom); |
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$nav = $xpath->query('//nav'); |
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$error = $xpath->query('//p[@class="text-danger"]'); |
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return $nav->length === 1 && $error->length === 0; |
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} |
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/** |
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* Get URL contents |
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* |
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* @param string $url |
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* @param boolean $forceSecurity |
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* @return string |
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*/ |
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private function getUrl($url, $forceSecurity) |
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{ |
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$curl = curl_init(); |
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curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, $forceSecurity); |
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curl_setopt($curl, CURLOPT_HEADER, false); |
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curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); |
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curl_setopt($curl, CURLOPT_MAXREDIRS, 2); |
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curl_setopt($curl, CURLOPT_URL, $url); |
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curl_setopt($curl, CURLOPT_REFERER, $url); |
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curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE); |
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curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.125 Safari/533.4"); |
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$str = curl_exec($curl); |
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curl_close($curl); |
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return $str === false ? '' : (string) $str; |
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} |
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/** |
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* Gets the content after POSTing into an URL |
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* |
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* @param array $fields |
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* @param string $postUrl |
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* @param string $refererUrl |
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* @param boolean $forceSecurity |
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* @return string |
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*/ |
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private function postToUrl($fields, $postUrl, $refererUrl, $forceSecurity) |
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{ |
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$fieldsString = ''; |
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foreach ($fields as $key => $value) { |
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$fieldsString .= $key.'='.$value.'&'; |
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} |
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$fieldsString = rtrim($fieldsString, '&'); |
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$curl = curl_init(); |
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curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, $forceSecurity); |
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curl_setopt($curl, CURLOPT_HEADER, false); |
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curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); |
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curl_setopt($curl, CURLOPT_URL, $postUrl); |
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curl_setopt($curl, CURLOPT_REFERER, $refererUrl); |
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curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE); |
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curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.125 Safari/533.4"); |
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curl_setopt($curl, CURLOPT_POST, count($fields)); |
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curl_setopt($curl, CURLOPT_POSTFIELDS, $fieldsString); |
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$str = curl_exec($curl); |
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curl_close($curl); |
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return $str === false ? '' : (string) $str; |
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} |
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} |
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iesoretania /
gestconv
